Auto prowler alarm



L. D. JOLLEY ETAL AUTO PROWLER ALARM Filed Jan.V 1:5, 1947 I uve/:tart

: Leland D. Jolley t Duane L. Jolley By php -mlbj WWWMW Patented Sept. 7, 1848 AUTO PROWLER ALARM Leland D. Jolley and Duane L. Jolley, Provo, Utah Application January 13, 1947, Serial No. '121,804

3 claims. 1

This invention relates to new and useful improvements in signalling devices adapted to be used ygenerally in automotive vehicles.

The general purpose and object of this inv ention is to provide a device of the character described for intermittently sounding an alarm under certain predetermined conditions.

An object of this invention is to provide improved means for intermittently energizing a sounding device.

Another object of this invention is to provide `buffer means for dampening vibration in the device.

A further object of this invention is to/ provide a switch means controlled by heating means for rendering a. portion of the device operative.

A still further object of this invention is to provide a master control means for the device.

These objects and other ancillary objects will become apparent in following the description of the preferred embodiment of the instant invention illustrated in the accompanying drawings, wherein:

Figure 1 is a plan view of the preferred form of the instant invention;

Figure 2 is a tranverse sectional view of the invention disclosed in Figure l, showing parts in elevation for clarity;

Figure 3 is an enlarged, exaggerated elevational view of the bimetallic latch and heating coil forming part of the instant invention, and

Figure 4 is a wiring diagram of the instant invention showing certain elements schematically.

Referring now in detail to the illustrated preferred embodiment of the instant invention, like reference characters are used throughout to indicate similar elements.

This invention appertains to signalling devices especially adapted to be used with automotive vehicles and especially adapted to intermittently sound an alarm when an automotive vehicle is in unauthorized use. The inventive concept embraces novel and improved means for sounding the above mentioned alarm.

A housing I is provided with a cover plate l2. Suitable securing means may be used to fasten said cover plate to said housing, however, the preferable securing means are indicated as rivets I4. A suitable fastening bracket I6 is provided transversely of said receptacle I0 and has a plurality of apertures IB and 20 therein adapted to be used for convenient fastening to an automotive vehicle component. A second housing vor receptacle 22 having a suitable cover 2l is swingingly mounted within the said receptacle I0. The preferred mounting means consist of a hook 25 integral with or secured to the said cover 24, a ring 28 extending therethrough which is secured to a suitable hook 30 provided on the `said lid or cover member l2. It is apparent that by this construction the receptacle '22 is free to swing within the housing i0. A vibration damping means 32 is provided in said receptacle l0 and exterior of the receptacle 22. This vibration damping means comprises a bath or quantity of a suitable liquid, preferably a selected weight oil.

An electrical circuit including various components is operatively secured exterior of and in the housing l0 and receptacle 22. For the best understanding of the operation of the invention and the components of the electrical circuit, reference is made to the schematic showing thereof in Figure 4. A source of current 34, preferably the storage battery of an automobile, is provided and a conductor 3B extends to a suitable lock switch 38. This switch may be mounted on the dashboard of an ordinary automotive vehicle similar to the mounting of an ignition lock. A suitable insulated conductor 4|] is thenv led through the lid I2 and is held securely by a vsuitable nut and bolt construction generally indicated at 42. Electrical contact is then made with an electro-magnet 44 which is suitably secured to a perch 46 in said receptacle 22. Conventional securing means, such as the rivet 48 may be used to hold said perch in xed relation with said receptacle '22. Beneath the perch 46 is a transverse cross member 50, separating the said receptacle 22 into two distinct chambers. An adjustable securing means 52 is provided through said transverse member 5D and has a ring bearing aperture therethrough. A second ring 54 is received in the above mentioned ring and a, plunger-like pendulum 56 is swingingly secured to the said ring 54. The head portion 58 of said plunger 5B is preferably truste-conical in shape and is adapted to be received in spaced 'relation with a frusta-cone 60. As is seen from an inspection of Figure 2, the said frusto-cone 6U is suitably insulated from the receptacle 22 by means of an insulating block 62 received between said receptacle and frusta-cone. A single rivet 64 may be used to secure the said members SU and 62 in fixed relation.

Returning to'the schematic showing of the operation of the invention, it is seen that when the electro-magnet 44 is de-energized, no current will flow since no ground contact is made.

However, the said pendulum 56 striking its asv r.; 'v

sociated frusta-conical member 60 completes the circuit, thereby energizing the electro-magnet 4 4. It is here noted that the movement of the pendulum is eii'ected by the normal travel of an automotive vehicle. Upon energizing said electro-magnet 44, a resilient arm 66 having a contact 68 thereon, is pulled toward said electromagnet. Received on the said perch 46 and insulated therefrom is a second contact which cooperates with the above mentioned contact 68 to form a switch. It is apparent from an inspection of Figure 4 that upon the energizing of the electro-magnet the switch formed at 68'10 is closed.

When the lock switch 38 is closed, current is free to ow to a heating coil 12 pending the supplying of a ground. lIhe said heating coil 12 is provided about a bimetallic latch 14 which is lxedly secured to the said cross member or platform 50. A keeper 18 is provided at the terminal portion of the said bimetallic latch. It is evident from an inspection of Figures 2 and 4, that the said latch and keeper are adapted t'o grasp the said arm 66 as the electro-magnet 44 pulls the latter in the appropriate direction. It is further obvious that upon lcJhe closing of the switch formed at 68-10 the heatingz coil will begin to operate. After a few seconds the bimetallic latch will assume a position somewhat similar to that shown in Figure 3, thereby releasing the arm 66. Due to the inherent resiliency of the arm 66, it assumes its natural position thereby opening the switch at 68-10. x

It is seen that the above described construction will cause intermittent and predetermined energizing of the second electro-magnet 80. An arm 82 is secured to a wall of the said receptacle 22 and is of the single leaf spring construction. A suitable contact 89 is provided at one end of said leaf spring and said contact is in electrical communication with the said conductor 36. A second arm 86 is secured to the said receptacle 22 and a suitable contact 88 is provided at one end thereof. The said contacts 89 and 88 cooperate to form a circuit breaker. It is apparent that upon energizing of the said electro-magnet 80 the circuit breaker 8.9-88 is opened or closed. 0bviously, the intermittent energizing action of the hereinabove described components is transmitted to the circuit breaker 89-88. A suitable conductor 90 is then led from the said contact 88 through a suitable nut and bolt securing means 92, to a sounding means such as a siren or horn 94. It is I noted that if a horn is used, it may be the conventional automotive vehicle sounding device.

There has been described hereinabove a single It is understood, of course, that various changes in the details of construction, size, shape and coniiguration may be made herein without departypreferred embodiment of the instant invention.

4 l ing from the purview of the invention. Accordingly, limitation is sought only in accordance with the scope of the following claims.

Having thus described our invention what is claimed as new and novel and improved is:

1. A signal device adapted to be used in automotive vehicles, comprising a housing, a receptacle swingingly mounted within said housing, vibration damping means in said housing means forming, an electrical circuit in said housing and receptacle, sound producing means exterior of said housing and in said circuit, means for intermittently energizing said circuit thereby actuating said sound producing means, said intermittent energizing means includingk a freely swinging pendulum switch in said receptacle, an electro-magnet controlled thereby, a switch closed by said electro-magnet, means for retaining said switch closed for a predetermined interval and means actuated by said switch for actuating said sound producing means.

2. A signal device adapted to be used in automotive vehicles, comprising a housing, a receptacle swingingly mounted within said housing, vibration damping means in said housing means forming, an electrical circuit in said housing and receptacle, sound producing means exterior of said housing and in said circuit, means for intermittently energizing said circuit thereby actuating said sound producing means, said intermittent energizing means including a freely swinging pendulum switch in said receptacle, an electromagnet controlled thereby, a switch closed by said electro-magnet, means for retaining said switcih closed for a predetermined interval and means actuated by said switch for actuating said sound producing means, said last mentioned means including a second electro-magnet and a circuit breaker actuated by said second electromagnet.

3. The invention as recited in claim 1, wherein said retaining means includes a bimetallic latch adapAted to -be deformed upon the application of heat thereto and a heating coil intermittently` operable secured around said latch.

LELAND D. JOLLEY. DUANE L. J OLLEY.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,298,055 Kershaw Mar. 25, 1915 1,305,352 Gettell June 3, 1919 1,729,800 Scott Oct. 1, 1929 1,805,147 Murray May 12, 1931 1,844,338 Rupert* Feb. 9. 1932 

